Adding the VerifyModule function (and helpers) to safe browsing.

chrome/browser/safe_browsing/verifier.h

Index: chrome/browser/safe_browsing/verifier.h
diff --git a/chrome/browser/safe_browsing/verifier.h b/chrome/browser/safe_browsing/verifier.h
new file mode 100644
index 0000000000000000000000000000000000000000..ece2ba06d37ae416ce7c5be8c2cec493d01451e0
--- /dev/null
+++ b/chrome/browser/safe_browsing/verifier.h
@@ -0,0 +1,23 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_SAFE_BROWSING_VERIFIER_H_
+#define CHROME_BROWSER_SAFE_BROWSING_VERIFIER_H_
+
+namespace safe_browsing {
+
+// This enum defines the possible module states VerifyModule can return.
+enum ModuleState {
+  MODULE_STATE_UNKNOWN = 0,

[grt (UTC plus 2), 2014/07/21 20:41:59]

nit: no need for " = 0" here.

[krstnmnlsn, 2014/07/25 00:15:43]

Yea, I wasn't sure what the convention was (Chromium code/the style guide seem
to use both).  No zero it is.

+  MODULE_STATE_UNMODIFIED,
+  MODULE_STATE_MODIFIED,
+};
+
+// Examines the code section of the given module in memory and on disk, looking
+// for unexpected differences.
+ModuleState VerifyModule();

[grt (UTC plus 2), 2014/07/22 17:39:50]

ModuleState VerifyModule(const wchar_t* module);

[krstnmnlsn, 2014/07/25 00:15:43]

Yikes/thanks!  (As you can tell, the version I was actually running/testing with
was not identical to the uploaded stuff, sorry for the resulting silliness...)

+
+}  // namespace safe_browsing
+
+#endif  // CHROME_BROWSER_SAFE_BROWSING_VERIFIER_H_